In the Linux kernel, the following vulnerability has been resolved: gve: fix napi_disable deadlock when attempting to disable XSK pools When… (CVE-2026-99048)

The Linux kernel's GVE driver had a deadlock vulnerability triggered during the disabling of XSK pools. The problem arose because GVE called the unlocked versions of napi_disable and napi_enable while the netdev lock was already acquired due to queue management operations support. This caused the thread to attempt to re-acquire a lock it already held, resulting in a deadlock. The vulnerability was fixed by updating the NAPI calls to their locked versions, preventing the deadlock condition.

This vulnerability could cause a deadlock in the kernel when disabling XSK pools, potentially leading to system hangs or degraded network functionality. There is no indication of code execution or privilege escalation. The impact is limited to availability and stability of the affected kernel networking components.

A fix has been implemented in the Linux kernel to update the NAPI calls to their locked versions, resolving the deadlock issue. Users should apply the official kernel updates that include this fix. Since this is a kernel-level fix, upgrading to a patched kernel version is the recommended remediation.